All-pH Hydrogen Evolution by Heterophase Molybdenum Carbides Prepared via Mechanochemical Synthesis

被引：21

作者：

Chen, Peirong ^{[1
,2
]}

Ouyang, Liuzhang ^{[1
,2
]}

Lang, Chengguang ^{[1
,2
]}

Zhong, Hao ^{[1
,2
]}

Liu, Jiangwen ^{[1
,2
]}

Wang, Hui ^{[1
,2
]}

Huang, Zhenguo ^{[3
]}

Zhu, Min ^{[1
,2
]}

机构：

[1] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China

[2] South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China

[3] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2023年 / 11卷 / 09期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

molybdenum carbide; hydrogen evolution; electrocatalysis; mechanochemistry; all-pH value; NITROGEN-DOPED CARBON; EFFICIENT ELECTROCATALYSTS; MESOPOROUS CARBON; MULTIPLE PHASES; DOUBLE-LAYER; GRAPHENE; MO2C; HETERONANOWIRES; PERFORMANCE; CATALYSTS;

D O I：

10.1021/acssuschemeng.2c05547

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

As non-precious-metal catalysts for the hydrogen evolution reaction (HER), molybdenum carbides have attracted extensive attention in recent years. Molybdenum carbides usually require high synthesis temperatures (>700 degrees C), which leads to a high cost. In this study, we report a controllable synthesis of heterophase molybdenum carbides (MoC/Mo2C) using a simple ball milling method without external thermal input. The as obtained MoC/Mo2C catalysts exhibit excellent HER electrocatalytic activity and durability at all pH conditions in comparison with MoC or Mo2C alone. The interface of MoC/Mo2C formed in situ is the key factor in improving the electrocatalytic activity. This fabrication method is cheap and effective in generating heterophase interfaces, which can be employed in many other fields where interface engineering is needed.

引用

页码：3585 / 3593

页数：9

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